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International Convention on Information and Communication Technology, Electronics and Microelectronics

作者： Stepan Kochemazov Alexander Semenov Oleg Zaikin Matrosov Institute for System Dynamics and Control Theory SB RAS Irkutsk Russia

ISBN: (纸本)9781509025435

In this paper we present the computational study of one class of discrete models of collective behavior. In the context of these models a set of agents, that form a collective, is represented by a network. Each agent is assigned a special weight function. The behavior of a collective in discrete time moments is specified with a vector function, the coordinates of which are defined by values of agents weight functions at corresponding time moments. We study phenomena concerning the so-called conforming behavior: when an agent at some time moment decides to act or not to act depending on the similar decisions, made by agents from its neighborhood at the previous moment. We consider the problem how to dispose a relatively small number of always acting agents called activators in the network so that the majority of agents soon become active. We apply state-of-the-art SAT solvers to this problem. To tune the solver we use special parameterization techniques. In our computational experiments we show that the solving of considered problems of large dimension can be significantly sped up by finding effective combinations of the SAT solver parameters values on test instances from the same class but of much lower dimension.

关键词： Computational modeling Biological system modeling Training Encoding Context Stationary state Tuning

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Necessary optimality conditions for optimal impulsive control problems with hysteresis

Necessary optimality conditions for optimal impulsive contro...

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International Conference on Stability and Oscillations of Nonlinear control systems (Pyatnitskiy's Conference)

作者： O. N. Samsonyuk S. A. Timoshin Matrosov Institute for System Dynamics and Control Theory of SB RAS Irkutsk Russia

We study a class of optimal control problems for measure-driven differential equations with rate independent hysteresis. The hysteresis is modeled by an evolution variational inequality equivalent to the action of play operator generalized to the case of discontinuous inputs of bounded variation. A method to obtain optimality conditions for impulsive processes is proposed.

关键词： Hysteresis Optimal control Trajectory Biological system modeling Process control Differential equations Mathematical model

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Job flow management for virtualized resources of heterogeneous distributed computing environment

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Procedia Engineering 2017年 201卷 534-542页

作者： I. Bychkov A. Feoktistov I. Sidorov R. Kostromin Matrosov Institute for System Dynamics and Control Theory of SB RAS 134 Lermontov st. Irkutsk 664033 Russia

We address to the problem of an integration of heterogeneous computational clusters to the united environment applying the OpenStack platform for a cluster resource virtualization. However, this platform does not interact with the traditional resource management systems such as the PBS Torque or SLURM that are used in cluster resources. To this end, we developed an additional hypervisor shell to run virtual machines through queues of the aforementioned systems. Thus, we expand the OpenStack capabilities for an application job management and provide a computation scalability for virtualized resources of clusters. In order to show the benefits of our approach to the scalable application management in integrated cluster environments, we developed a parameter sweep application for simulation modeling of warehouse logistics and solved three optimization tasks for the real refrigerated warehouse. We compared the selected criteria of task solving processes with the hypervisor shell applying and without it by means of simulation modeling. Experiments show that the hypervisor shell can significantly improve computation speedup and task solving time through reallocating virtual machines to queues of the resource management systems.

关键词： heterogeneous distributed computing environment HPC-clusters OpenStack

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Service-oriented Information and Analytical system of Estimation of Influence of the Lithosphere Model on Dynamic Parameters of Rocky Soil Oscillations from Earthquakes of Southern Baikal Region 5

Service-oriented Information and Analytical System of Estima...

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5th International Conference Information Technologies in Earth Sciences and Applications for Geology, Mining and Economy, ITES and MP 2019

作者： Klyuchevskii, Anatoliy V. Ruzhnikov, Gennadiy M. Paramonov, Vyacheslav V. Mikhailov, Andrey A. Fedorov, Roman K. Dem’yanovich, Vladimir M. Demberel, S. Institute of the Earth’s Crust SB RAS Irkutsk Russia Matrosov Institute for System Dynamics and Control Theory Irkutsk Scientific Center SB RAS Irkutsk Russia Institute of Astronomy and Geophysics Mongolian Academy Ulaanbaatar Mongolia

The region of Southern Baikal belongs to the territories with high seismic activity. However, the issues of complex assessment of the influence of the lithosphere model on the dynamic parameters of the rock ground vibrations from earthquakes are insufficiently studied. It should be taken into account that the research is based on monitoring, storage and processing of large amounts of distributed Spatio-temporal data. To assess the impact of the lithosphere model on the dynamic parameters of rock ground vibrations from earthquakes in the region of Southern Baikal, a service-oriented information-analytical system (IAS) of geoportal type is developed. It allows integrate heterogeneous thematic databases and by using services to resolve challenges of modelling, comparison and assessment of dangerous geological processes occurring in the region. Copyright © 2019 for this paper by its authors. Use permitted under Creative Commons License Attribution 4.0 International (CC BY 4.0).

关键词： Earthquakes

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The method of extracting the contours of objects from satellite images 2

The method of extracting the contours of objects from satell...

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2nd Scientific-Practical Workshop Information Technologies: Algorithms, Models, systems, ITAMS 2019

作者： Yuriy, Avramenko Roman, Fedorov Matrosov Institute for System Dynamics and Control Theory of Siberian Branch of Russian Academy of Sciences Irkutsk664033 Russia Irkutsk scientific center of Siberian Branch of Russian Academy of Sciences Irkutsk664033 Russia

Earth remote sensing data is used to solve many practical problems, for example, for digitizing satellite images. This problem can be divided into three stages, in this case let it be the classification of objects, the extraction of contours and creation of a vector layer. Neural networks, the support vector method, the K-means method and others can be used to classify objects. Good results on the extraction of edges are given by the Canny edge detector, Harris operator, Hough transform, and other methods. Creation of a vector layer is not trivial problem. In this article, we propose a method for extracting the contours of objects from satellite images. The idea of the proposed method is to combine a neural network and an interpreter of the SOQL language. The neural network allows finding quickly possible positions of the object on textural and spectral features and the SOQL interpreter extract contours of the object by structural description and create vector layer. Copyright © 2019 for this paper by its authors.

关键词： Vectors

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Classification in Binary Feature Space Using Logical Dynamic Models

Classification in Binary Feature Space Using Logical Dynamic...

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Proceedings of the International Convention MIPRO

作者： G.A. Oparin V.G. Bogdanova A.A. Pashinin Matrosov Institute for System Dynamics and Control Theory of SB RAS Irkutsk Russia

The article proposes a method based on the use of logical dynamic systems in the classification problem for Boolean vectors (binary feature vectors). This method has practical application in various fields of science and industry, in particular, socionics, geology, mechanical engineering, and others. Binary synchronous autonomous linear and nonlinear dynamic models with an unknown characteristic matrix are considered. Matrix elements are chosen the way that these binary feature vectors are equilibrium states of the binary dynamic model. The areas of attraction of equilibrium states act as classes. One reference vector corresponds to each class. The classification process consists of constructing trajectories of a logical-dynamic system with a given initial state. It aims to verify the reachability of one of the equilibrium states. A meaningful example of the proposed method is considered.

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Methods and algorithms of multicriteria optimization on the basis of nonrigorous rankings of alternatives by partial criteria and experience of computer realization

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Journal of Automation and Information Sciences 2006年第1期38卷 24-35页

作者： Vassilyev, S.N. Kotlov, Yu.V. Russian Academy of Sciences Institute of System Dynamics and Control Theory Siberian Branch Russian Academy of Sciences Irkutsk Irkutsk Higher Military Aviation Engineering School Russia

We consider a class of problems of multicriteria selection, where final set of alternatives is known, a number of alternatives can be sufficiently great, they can be evaluated both quantitatively and qualitatively. Information about preferences is represented and generalized (with indication of equivalence) of ranking of alternatives. For the given class of problems we suggest computer technology of search of compromise solution, which uses qualitative criteria and new approach for solving problems of multicriteria selection. © 2006 by Begell House Inc.

关键词： Algorithms

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The computer architecture and hardware description language

The computer architecture and hardware description language

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2015 5th International Workshop on Computer Science and Engineering: Information Processing and control Engineering, WCSE 2015-IPCE

作者： Burlakov, Aleksey S. Mikhailov, Andrey A. Institute for System Dynamics and Control Theory Siberian Branch of Russian Academy of Science Irkutsk664033 Russia

The paper introduces CAHDL, a Computer Architecture and Hardware Description Language. The CAHDL is aimed to specify processor instructions and hardware formally. The CAHDL can be used both in documentation and in programs which require information about computer architecture such as emulators, compilers, decompilers, etc. The article considers some syntactic constructions in examples and explains their semantics. The specification parsing methods are also briefly reviewed. The end of the paper observes the software developed to test the language and to debug specifications written in this language.

关键词： Computer architecture

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Predicting runtime of computational jobs in distributed computing environment 2

Predicting runtime of computational jobs in distributed comp...

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2nd International Workshop on Information, Computation, and control systems for Distributed Environments, ICCS-DE 2020

作者： Feoktistov, A.G. Basharina, O.Yu. Matrosov Institute for System Dynamics and Control Theory of SB RAS Lermontov St. 134 Irkutsk664033 Russia Irkutsk State University Karl Marx St. 1 Irkutsk664003 Russia

The paper addresses a relevant problem of predicting the runtime of jobs for executing problem-solving schemes of large-scale applications in a heterogeneous distributed computing environment. Such an environment includes nodes that have various hardware architectures, different system software, and diverse computational possibilities. We believe that increasing the accuracy in predicting the runtime of jobs can significantly improve the efficiency of problem-solving and rational use of resources in the heterogeneous environment. To this end, we propose new models that make it possible to take into account various estimations of the module runtime for all modules included in the problem-solving scheme. These models were developed using the special computational model of distributed applied software packages (large-scale scientific applications). In addition, we compare the prediction results (jobs runtime and their errors) using different estimations. Among them are the estimations obtained through the modules testing, user's estimations, and estimations based on computational history. These results were obtained in continuous integration, delivery, and deployment of applied and system software of a package for solving warehouse logistics problems. They show that the largest accuracy is achieved by the modules testing. Copyright © 2020 for this paper by its authors. Use permitted under Creative Commons License Attribution 4.0 International (CC BY 4.0).

关键词： Forecasting

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Multi-agent Algorithm for Re-allocating Grid-resources and Improving Fault-tolerance of Problem-solving Processes

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Procedia Computer Science 2019年 150卷 171-178页

作者： Alexander Feoktistov Roman Kostromin Ivan Sidorov Sergey Gorsky Gennady Oparin Matrosov Institute for System Dynamics and Control Theory of SB RAS Lermontot st. 134 Irkutsk 664033 Russia

Nowadays, a provision of the computational process fault-tolerance in Grid is a relevant issue. In the paper, we address a fault-tolerance improvement in solving large-scale scientific and applied problems that are implemented through modular programming in heterogeneous distributed computing environments. We describe a computational process by an abstract program (problem-solving scheme) that correlates to a workflow. The problem-solving scheme specifies modules (applied software) and their relations with each other. This paper proposes a new multi-agent algorithm for re-allocating Grid-resources when the computational process fails. The algorithm execution involves forming a residual problem-solving scheme using methods of the abstract program specialization and reallocating its modules between agents that represent computational resources. In comparison to the known algorithms for the same purpose, the proposed algorithm implements an adaptive multi-scenario solving this issue and therefore increases a degree of computational process fault-tolerance. Extensive modeling and practical experiments demonstrate the practicability of the proposed algorithm.

关键词： large-scale problems workflow Grid multi-agent management fault-tolerance

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